Koji Seki

Acting

Koji Seki

Born 25 November 1982 · Saitama, Japan · 43

Koji Seki (関 幸司, Seki Kōji, born November 25, 1982) is a Japanese voice actor from Saitama Prefecture who is affiliated with Raccoon Dog. He graduated from Pro-Fit Voice Actor Training School and joined the agency Pro-Fit. On April 1, 2022, he transferred to Raccoon Dog.

Known for

Highlights

JUJUTSU KAISEN2020 · Series · Fumi's Father (voice)
SPY x FAMILY2022 · Series · Rahden (voice)
Haikyu!!2014 · Series · Kai Akakura (voice)
Sword Art Online2012 · Series · Technical Staff (voice)
Frieren: Beyond Journey's End2023 · Series · Villager (voice)
Dan Da Dan2024 · Series · TV Station Producer (voice)

Filmography

Movies

4 films

DAN DA DAN: First Encounter2024 · Film · TV Station Producer (voice)
Umamusume: Pretty Derby - Beginning of a New Era2024 · Film · (voice)
HAIKYU!! The Dumpster Battle2024 · Film · Patient (voice)
Sword Art Online the Movie – Progressive – Scherzo of Deep Night2022 · Film · Naijan (voice)

Filmography

Series

34 shows

Star Wars: Visions Presents - The Ninth Jedi2026 · Series · Satellite Digger (voice)
Akane-banashi2026 · Series · Chusuke Chuotei (voice)
You and I Are Polar Opposites2026 · Series · Convenience Store Manager (voice)
Inexpressive Kashiwada and Expressive Oota2025 · Series · Mathematics Teacher (voice)
Solo Camping for Two2025 · Series · Izakaya Manager (voice)
Turkey! Time to Strike2025 · Series · Samurai (voice)
Welcome to the Outcast's Restaurant!2025 · Series · Merchant (voice)
Summer Pockets2025 · Series · (voice)
Catch Me at the Ballpark!2025 · Series · Kaiser (voice)
Puniru Is a Kawaii Slime2024 · Series · Academic Researchers (voice)
Orb: On the Movements of the Earth2024 · Series · Knight (voice)
Dan Da Dan2024 · Series · TV Station Producer (voice)
Let This Grieving Soul Retire2024 · Series · Greg Zangief (voice)
Mission: Yozakura Family2024 · Series · Detective (voice)
Tearmoon Empire2023 · Series · Priest (voice)
Frieren: Beyond Journey's End2023 · Series · Villager (voice)
I Got a Cheat Skill in Another World and Became Unrivaled in the Real World, Too2023 · Series · (voice)
The Aristocrat's Otherworldly Adventure: Serving Gods Who Go Too Far2023 · Series · Sebas (voice)
NieR:Automata Ver1.1a2023 · Series · Kingdom Citizen (voice)
BLUE LOCK2022 · Series · Reporter B (voice)
SPY x FAMILY2022 · Series · Rahden (voice)
Star Wars: Visions2021 · Series · Eno's Father / Resistance Member (voice)
Remake Our Life!2021 · Series · (voice)
I've Been Killing Slimes for 300 Years and Maxed Out My Level2021 · Series · Store Customer E (voice)
Super Cub2021 · Series · Clerk (voice)
Yashahime: Princess Half-Demon2020 · Series · Thug (voice)
JUJUTSU KAISEN2020 · Series · Fumi's Father (voice)
Tower of God2020 · Series · (voice)
ID: INVADED2020 · Series · Staff (voice)
The Quintessential Quintuplets2019 · Series · Teacher (voice)
March Comes In Like a Lion2016 · Series · Authorized Person 3 (voice)
Haikyu!!2014 · Series · Kai Akakura (voice)
Sword Art Online2012 · Series · Technical Staff (voice)
Daily Lives of High School Boys2012 · Series · Basketball Guy (voice)